Fix llhost integration test: replaced linux.org by lindenlab.com in the DNS lookup test as linux.org was not being resolved as expected

- Made text box and its panel follow right

reviewed by davep.

- Moved callbacks for Link/Unlink to the LLSelectMgr

- Binded Link/Unlink callbacks with buttons in Build Floater

- Replaced view_listener_t usage for Link, Unlink, EnableLink, EnableUnlink with boost::bind

BUG STORM-1004 FIXED Unblocking/blocking name sometimes deletes identically named entry, but of different TYPE

LLMuteList stores muted objects in two sets: set of names and set of ids. Avatar objects are stored by ids (set of ids), other objects can be stored both by name(set of names) or ids

- Delete items from corresponding set (from set of names or ids), not form both sets at time.

- Improved isMuted method's logic. Now if avatar is tested whether it's muted or not, don't search its name in the set of names.

STORM-842 FIXED displaying favorites list at login screen when user name is typed like "firstname.lastname" or "firstname_lastname" or user name consists of a single word.

Reviewed with Callum Linden.

Actual usernames are replaced with "TestString PleaseIgnore" in EN locale with setting translate="false" flag for affected widgets.
Translated phrases with actual usernames are removed from XUI files in other locales.

- When accepting an avaline call, add a caller to the recent list as AvalineListItem

- When adding item to the LLRecentPeople, check whether item with the same phone number exists and delete it if exists. This is need to avoid duplication in the Recent list of the panel People.